214975986 has 16 divisors (see below), whose sum is σ = 448645824. Its totient is φ = 68543024.

The previous prime is 214975961. The next prime is 214975987. The reversal of 214975986 is 689579412.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (214975987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 778761 + ... + 779036.

It is an arithmetic number, because the mean of its divisors is an integer number (28040364).

Almost surely, 2^214975986 is an apocalyptic number.

214975986 is an abundant number, since it is smaller than the sum of its proper divisors (233669838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

214975986 is a wasteful number, since it uses less digits than its factorization.

214975986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557825.

The product of its digits is 1088640, while the sum is 51.

The square root of 214975986 is about 14662.0594051450. The cubic root of 214975986 is about 599.0503365809.

The spelling of 214975986 in words is "two hundred fourteen million, nine hundred seventy-five thousand, nine hundred eighty-six".